Pulling roller structure of mask production machine

Abstract

The utility model relates to a material pulling roller structure of a mask production machine, and belongs to the technical field of mask production machines. Comprising a lower material pulling roller and an upper material pulling roller, the lower material pulling roller is fixedly connected to the inner sides of the two sets of rack side plates, the upper material pulling roller is fixedly connected to the inner sides of the two sets of rack side plates and located above the lower material pulling roller, the left end and the right end of the upper material pulling roller are rotationally connected with bearing seats, and movable grooves are formed in the inner sides of the two sets of rack side plates. According to the utility model, the annular force transducer is arranged, so that the pressure between the upper material pulling roller and the lower material pulling roller can be detected in real time. After mask materials are replaced or the relative positions of the upper material pulling roller and the lower material pulling roller are adjusted, the distance between the upper material pulling roller and the lower material pulling roller can be correspondingly and finely adjusted according to the actual pressure value of the annular force measuring sensor, so that the pressure applied to the mask by the upper material pulling roller and the lower material pulling roller is always kept in a proper range; the breathing resistance of the masks is ensured to be in a qualified state, and poor breathing resistance of masks in batches is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of mask production machines, in particular to a material pulling roller structure of a mask production machine. Background Art

[0002] The breathing resistance of a mask is one of the important indicators affecting the wearing comfort and judging whether the mask is qualified. If it exceeds the required value, it is judged as unqualified. Generally, the smaller the breathing resistance value, the better the wearing experience. The pressure between the upper and lower material pulling rollers on the mask production machine determines whether the breathing resistance value of the mask is qualified. When the pressure is too high, the mask material will be overly compressed or squeezed, thus increasing the breathing resistance.

[0003] When replacing the mask material or adjusting the relative position of the upper and lower material pulling rollers, the breathing resistance value of the mask will change accordingly. However, the mask production machine itself does not have the function of detecting the pressure value between the upper and lower material pulling rollers. During the debugging stage, the pressure can only be adjusted by hand feeling, and the resistance is inspected in the final process section, which easily causes poor breathing resistance of a batch of masks. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides a material pulling roller structure of a mask production machine. The technical solution of the utility model is as follows:

[0005] A material pulling roller structure of a mask production machine includes a lower material pulling roller and an upper material pulling roller. The lower material pulling roller is fixedly connected to the inner sides of two sets of frame side plates. The upper material pulling roller is fixedly connected to the inner sides of two sets of frame side plates and is located above the lower material pulling roller. Both the left and right ends of the upper material pulling roller are rotatably connected with bearing seats. Activity grooves are respectively opened on the inner sides of the two sets of frame side plates. The two bearing seats are slidably connected to the inside of the corresponding activity grooves. A first threaded hole is opened on the upper surface of the bearing seat. A short screw rod is threadedly connected to the inside of the first threaded hole. The upper end of the short screw rod extends out of the first threaded hole and is sleeved with an annular force measuring sensor. The annular force measuring sensor is electrically connected to a control box. The control box is electrically connected with an alarm. The lower surface of the annular force measuring sensor is attached to the upper surface of the bearing seat. The upper end surface of the short screw rod is lower than the boss surface of the annular force measuring sensor. A through hole is opened on the upper surface of the frame side plate, and the through hole penetrates through to the inside of the activity groove. A circular ring seat is fixedly connected to the upper surface of the frame side plate and above the through hole. A sleeve is rotatably connected to the inside of the circular ring seat through a bearing. The upper end of the sleeve is fixedly connected with an adjusting nut. A long screw rod is threadedly connected to the inside of the adjusting nut. The lower end of the long screw rod penetrates through the through hole and extends into the inside of the activity groove. The lower end of the long screw rod is threadedly connected with a fixing nut. The lower end of the fixing nut is fixedly connected with a gasket, and the gasket abuts against the upper surface of the annular force measuring sensor. The two adjusting nuts are connected through a synchronous component.

[0006] Optionally, the synchronization component includes two sets of gears and one set of racks. The two sets of gears are respectively fixedly sleeved outside the adjusting nuts on the corresponding sides, and the racks are commonly engaged on one side of the two sets of gears.

[0007] Optionally, an L-shaped plate is fixedly connected to the upper surface of the side plate of the frame. A guide rail is fixedly connected to the upper surface of the L-shaped plate. A slider is fixedly connected to the side of the rack away from the gear, and the slider is slidably connected inside the guide rail.

[0008] Optionally, one end of the slider is rotatably connected to an adjusting screw. An L-shaped frame is fixed to the outside of one of the side plates of the frame by bolts. A second threaded hole is formed through the upper end surface of the L-shaped frame, and the adjusting screw is threadedly connected inside the second threaded hole.

[0009] Optionally, a knob is fixedly connected to the end of the adjusting screw away from the slider.

[0010] Optionally, two locking nuts are threadedly sleeved on the outside of the adjusting screw, and the two locking nuts respectively abut against the left and right sides of the upper end of the L-shaped frame.

[0011] All the above optional technical solutions can be combined arbitrarily, and the present utility model does not elaborate on the structures after combination one by one.

[0012] By means of the above solution, the beneficial effects of the present utility model are as follows:

[0013] 1. By providing an annular force sensor, the present utility model can detect the pressure between the upper pulling roller and the lower pulling roller in real time. During the detection process, the gasket will be adjusted to a preset height in advance according to the thickness of the mask. When the mask is inserted between the upper pulling roller and the lower pulling roller, the mask will push up the upper pulling roller. At this time, the upper pulling roller drives the annular force sensor to move up synchronously through the bearing seat. The upward movement of the upper pulling roller will cause the annular force sensor to reach an abutting state with the preset gasket. At this time, the pressure value detected by the annular force sensor is the actual pressure value between the upper pulling roller and the lower pulling roller.

[0014] 2. After replacing the mask material or adjusting the relative position of the upper and lower pulling rollers, the distance between the upper pulling roller and the lower pulling roller can be adjusted correspondingly according to the actual pressure value of the annular force sensor, so that the pressure applied by the upper pulling roller and the lower pulling roller to the mask is always kept within a suitable range, ensuring that the breathing resistance of the mask is in a qualified state and avoiding the situation of poor breathing resistance of a batch of masks.

[0015] The above description is only an overview of the technical solution of the present utility model. In order to better understand the technical means of the present utility model and be implemented in accordance with the content of the description, the following provides a detailed description of the preferred embodiments of the present utility model in conjunction with the accompanying drawings as follows. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall external structure of the pulling roller structure of the mask production machine provided by the present utility model;

[0017] Figure 2 It is a top view of the pulling roller structure of the mask production machine provided by the present utility model;

[0018] Figure 3 It is a front sectional view of the pulling roller structure of the mask production machine provided by the present utility model;

[0019] Figure 4 It is Figure 3 an enlarged schematic diagram of part A in

[0020] Figure 5 It is a schematic diagram of the structure of the frame side plate, long screw and adjusting nut in the present utility model in cooperation;

[0021] Figure 6 It is a schematic diagram of the structure of the support seat, short screw and annular side force sensor in the present utility model in cooperation;

[0022] Figure 7 It is a schematic diagram of the structure of the circular ring seat, bearing, sleeve, adjusting nut, long screw, fixing nut, gasket and gear in the present utility model in cooperation;

[0023] Figure 8 It is a disassembled schematic diagram of the synchronization component in the present utility model.

[0024] Reference numerals in the drawings: 1, lower pulling roller; 2, upper pulling roller; 21, bearing seat; 211, first threaded hole; 3, frame side plate; 31, movable groove; 32, through hole; 4, short screw; 41, annular force measuring sensor; 5, circular ring seat; 51, bearing; 52, sleeve; 53, adjusting nut; 54, long screw; 55, fixing nut; 56, gasket; 6, synchronization component; 61, gear; 62, rack; 63, slider; 64, L-shaped plate; 641, guide rail; 65, adjusting screw; 651, knob; 66, L-shaped frame; 661, second threaded hole; 67, locking nut. Detailed Embodiments

[0025] The following further describes in detail the specific embodiments of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but do not limit the scope of the present utility model.

[0026] Please refer to Figure 1-8 For this utility model, a pulling roller structure of a mask production machine is provided, which includes a lower pulling roller 1 and an upper pulling roller 2. The lower pulling roller 1 is fixedly connected to the inner sides of two sets of frame side plates 3. The upper pulling roller 2 is fixedly connected to the inner sides of two sets of frame side plates 3 and is located above the lower pulling roller 1. Bearing seats 21 are rotatably connected to both the left and right ends of the upper pulling roller 2. Activity grooves 31 are provided on the inner sides of two sets of frame side plates 3. The two bearing seats 21 are slidably connected inside the activity grooves 31 on the corresponding sides. A first threaded hole 211 is provided on the upper surface of the bearing seat 21. A short screw 4 is threadedly connected inside the first threaded hole 211. The upper end of the short screw 4 extends out of the first threaded hole 211 and is sleeved with an annular force sensor 41. The annular force sensor 41 is electrically connected to a control box. The control box is electrically connected to an alarm. The lower surface of the annular force sensor 41 is in contact with the upper surface of the bearing seat 21. The upper surface of the upper end of the short screw 4 is lower than the boss surface of the annular force sensor 41. A through hole 32 is provided on the upper surface of the frame side plate 3. The through hole 32 penetrates to the inside of the activity groove 31. A circular ring seat 5 is fixedly connected to the upper surface of the frame side plate 3 and above the through hole 32. A sleeve 52 is rotatably connected inside the circular ring seat 5 through a bearing 51. The upper end of the sleeve 52 is fixedly connected to an adjusting nut 53. A long screw 54 is threadedly connected inside the adjusting nut 53. The lower end of the long screw 54 penetrates through the through hole 32 and extends to the inside of the activity groove 31. The lower end of the long screw 54 is threadedly connected to a fixing nut 55. The lower end of the fixing nut 55 is fixedly connected to a gasket 56. The gasket 56 abuts against the upper surface of the annular force sensor 41. The two adjusting nuts 53 are connected through a synchronous component 6.

[0027] By setting the annular force sensor 41 in this utility model, the pressure between the upper pulling roller 2 and the lower pulling roller 1 can be detected in real time to ensure that the pressure exerted by the upper pulling roller 2 and the lower pulling roller 1 on the mask always remains within a suitable range. When adjusting the distance between the upper pulling roller 2 and the lower pulling roller 1, rotate the adjusting nut 53. The adjusting nut 53 drives the sleeve 52 to rotate inside the bearing 51. At this time, the long screw 54 drives the fixing nut 55 and the gasket 56 to move upward (the adjusting height of the long screw 54 depends on the thickness of the mask to be produced, and it is necessary to ensure that the gap between the gasket 56 and the annular force sensor 41 matches the thickness of the mask). After adjustment, insert the mask between the upper pulling roller 2 and the lower pulling roller 1. At this time, the upper pulling roller 2 is lifted. The upper surface of the annular force sensor 41 is in contact with the gasket 56, and an extrusion force is formed between the annular force sensor 41 and the gasket 56. The annular force sensor 41 will transmit the current pressure value to the control box (according to the requirements of different materials and different layers of masks, different target pressure values between the upper pulling roller 2 and the lower pulling roller 1 can be preset in the control box. If the actual pressure value of the annular force sensor 41 exceeds the target pressure value at this time, the alarm will sound to prompt the operator to make adjustments).

[0028] When the thickness of the mask increases due to the replacement of the mask material, if the distance between the upper pulling roller 2 and the lower pulling roller 1 is not adjusted in time, when the mask passes between the upper pulling roller 2 and the lower pulling roller 1, due to the increase in the mask thickness, the pressure value of the annular force sensor 41 will become larger at this time. When it exceeds the target pressure value, the alarm will sound an alarm.

[0029] Through the synchronization component 6 of the present utility model, the synchronous adjustment of the two sets of adjusting nuts 53 can be realized, ensuring that the upper pulling roller 2 always remains horizontal during the adjustment process and avoiding the side deviation phenomenon.

[0030] Specifically, the short screw 4 is used to fix the bearing seat 21 and the annular force sensor 41 to ensure that the annular force sensor 41 can be stably installed on the bearing seat 21 for accurately measuring the pressure value. The upper surface of the upper end of the short screw 4 is lower than the boss surface of the annular force sensor 41. The purpose of this design is to ensure that when the short screw 4 is tightened, the upper end of the short screw 4 will not contact the gasket 56, so that it will not affect the abutting contact between the boss surface of the annular force sensor 41 and the lower surface of the gasket 56, thereby ensuring the accuracy of the detection of the annular force sensor 41.

[0031] It should be noted that the annular force sensor 41, the control box and the alarm are all prior arts, and their structures and principles will not be described in detail herein.

[0032] Further, the synchronization component 6 includes two sets of gears 61 and one set of racks 62. The two sets of gears 61 are respectively fixedly sleeved outside the adjusting nuts 53 on the corresponding sides, and the rack 62 is commonly engaged on one side of the two sets of gears 61.

[0033] Specifically, when the rack 62 moves, it will drive the two sets of gears 61 to rotate synchronously in the same direction, ensuring the synchronization of the rotation of the two sets of adjusting nuts 53.

[0034] Further, the upper surface of the frame side plate 3 is fixedly connected with an L-shaped plate 64. The upper surface of the L-shaped plate 64 is fixedly connected with a guide rail 641. One side of the rack 62 away from the gear 61 is fixedly connected with a slider 63, and the slider 63 is slidably connected inside the guide rail 641.

[0035] Specifically, the rack 62 drives the slider 63 to slide inside the guide rail 641. The guide rail 641 plays a role of guiding and limiting the slider 63 to ensure that it moves along a predetermined path.

[0036] Further, one end of the slider 63 is rotatably connected with an adjusting screw 65. The outside of one of the frame side plates 3 is fixed with an L-shaped frame 66 by bolts. A second threaded hole 661 is penetrated and opened on the upper surface of the L-shaped frame 66, and the adjusting screw 65 is threadedly connected inside the second threaded hole 661.

[0037] Specifically, when the driving adjustment screw 65 rotates, the cooperation between the thread of the adjustment screw 65 and the second threaded hole 661 enables the adjustment screw 65 to move inside the second threaded hole 661. This movement drives the slider 63 connected to the adjustment screw 65 to move together.

[0038] Furthermore, a knob 651 is fixedly connected to one end of the adjustment screw 65 away from the slider 63.

[0039] Specifically, the setting of the knob 651 allows the staff to easily rotate the adjustment screw 65, thereby adjusting the position of the slider 63.

[0040] Furthermore, two locking nuts 67 are sleeved on the outer thread of the adjustment screw 65, and the two locking nuts 67 respectively abut against the left and right sides of the upper end of the L-shaped frame 66.

[0041] Specifically, after the position of the adjustment screw 65 is adjusted, the two locking nuts 67 are tightened so that they abut against the left and right sides of the upper end of the L-shaped frame 66. At this time, the position of the adjustment screw 65 is fixed, ensuring that the adjustment screw 65 will not move due to vibration or external force.

[0042] It should be noted that in the mask production equipment, the distance between the upper feeding roller 2 and the lower feeding roller 1 will be preset to a fixed value in advance. This fixed value is usually determined according to the number of layers of the mask or other production parameters to ensure the production quality of the mask. During the production process, the staff needs to adjust the distance between the upper feeding roller 2 and the lower feeding roller 1 according to the set fixed value. After the adjustment is completed, the mask is inserted between the upper feeding roller 2 and the lower feeding roller 1 for debugging. If the actual pressure value of the annular force sensor 41 exceeds the target pressure value, it means that the distance between the upper feeding roller 2 and the lower feeding roller 1 needs to be increased to reduce the pressure on the mask, so as to ensure that the breathing resistance value of the mask is in a qualified state.

[0043] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A pulling roller structure of a mask production machine, characterized in that: The invention comprises a lower material drawing roller (1) and an upper material drawing roller (2), wherein the lower material drawing roller (1) is fixedly connected to the inner side of two sets of frame side plates (3), and the upper material drawing roller (2) is fixedly connected to the inner side of the two sets of frame side plates (3) and is located above the lower material drawing roller (1), and the left and right ends of the upper material drawing roller (2) are rotatably connected to bearing seats (21), and the inner sides of the two sets of frame side plates (3) are provided with movable grooves (31), and the two sets of bearing seats (21) are slidably connected to the movable grooves (31) on the corresponding sides. 1) inside, the upper surface of the bearing seat (21) is provided with a threaded hole (211), the internal thread of the threaded hole (211) is connected with a short screw (4), the upper end of the short screw (4) extends out of the threaded hole (211) and is sleeved with an annular force sensor (41), the annular force sensor (41) is electrically connected to a control box, the control box is electrically connected to an alarm, the lower surface of the annular force sensor (41) is in contact with the upper surface of the bearing seat (21), The upper end surface of the short screw (4) is lower than the boss surface of the annular force sensor (41); a through hole (32) is provided on the upper surface of the frame side plate (3); the through hole (32) penetrates into the interior of the movable groove (31); a circular ring seat (5) is fixedly connected to the upper surface of the frame side plate (3) and located above the through hole (32); a sleeve (52) is rotatably connected to the interior of the circular ring seat (5) via a bearing (51); an adjusting nut (52) is fixedly connected to the upper end of the sleeve (52). 3), the internal thread of the adjusting nut (53) is connected with a long screw (54), the lower end of the long screw (54) passes through the through hole (32) and extends to the inside of the movable groove (31), the lower end of the long screw (54) is threadedly connected with a fixing nut (55), the lower end of the fixing nut (55) is fixedly connected with a gasket (56), the gasket (56) abuts against the upper surface of the annular force sensor (41), and the two groups of adjusting nuts (53) are connected by a synchronization component (6).

2. The material pulling roller structure of a mask production machine according to claim 1, characterized in that: The synchronization component (6) comprises two sets of gears (61) and a set of racks (62). The two sets of gears (61) are respectively fixedly sleeved on the outside of the adjustment nut (53) on the corresponding side, and the racks (62) are jointly meshed on one side of the two sets of gears (61).

3. The material pulling roller structure of a mask production machine according to claim 2, characterized in that: An L-shaped plate (64) is fixedly connected to the upper surface of the frame side plate (3), a guide rail (641) is fixedly connected to the upper surface of the L-shaped plate (64), a slider (63) is fixedly connected to the side of the rack (62) away from the gear (61), and the slider (63) is slidably connected inside the guide rail (641).

4. The material pulling roller structure of a mask production machine according to claim 3, characterized in that: One end of the slider (63) is rotatably connected to an adjusting screw (65), and an L-shaped frame (66) is fixed to the outer side of one group of the frame side plates (3) by bolts, and a second threaded hole (661) is formed through the upper end surface of the L-shaped frame (66), and the adjusting screw (65) is threadedly connected to the inside of the second threaded hole (661).

5. The material pulling roller structure of a mask production machine according to claim 4, characterized in that: One end of the adjusting screw rod (65) away from the slider (63) is fixedly connected with a knob (651).

6. A material pulling roller structure for a mask production machine according to claim 4 or 5, characterized in that: The outer thread sleeve of the adjusting screw rod (65) is provided with two sets of locking nuts (67), and the two sets of locking nuts (67) are respectively abutted against the left and right sides of the upper end of the L-shaped frame (66).

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